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Matched or mismatched, that is not the question! The anti,anti configuration of the C7–C16 fragment of (+)-neopeltolide is stereoselectively installed in an iterative sequence of catalyst-controlled Si group and Me group transfers, even with mismatched selectivity in the former (Si=Me2PhSi, see scheme; TBS=tert-butyldimethylsilyl).
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Hartmann et al. (2010) studied this question.
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